Keyword Analysis & Research: definition of a rock cycle


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What is the rock cycle and how does it work?

The rock cycle is the formation, breakdown and reformation of a rock as a result of sedimentary, igneous, and metamorphic processes. The rock cycle is an illustration that is used to describe how the three rock types are related and how Earth processes change a rock from one type to another over time.

What are the major processes of the rock cycle?

The processes are named in bold next to the arrows. The two major sources of energy for the rock cycle are also shown; the sun provides energy for surface processes such as weathering, erosion, and transport, and the Earth's internal heat provides energy for processes like subduction, melting, and metamorphism.

What is the most important process in the rock cycle?

The key processes of the rock cycle are crystallization, erosion and sedimentation, and metamorphism. Magma cools either underground or on the surface and hardens into an igneous rock. As the magma cools, different crystals form at different temperatures, undergoing crystallization.

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